What? No. This one is easy. In the 14 million different scenarios Strange saw with only one scenario where they came out winning. That one event needed Tony alive. Thanos was going to kill Tony in IW and Strange also knew the only way he could keep Tony alive, would be to give up the soul stone. Tony would never have perfected the time machine or made the Iron Man Gauntlet, which means the events in Endgame would never have occurred.Quoting Wryan (view post)
They bring it up twice in Endgame to remind people why that decision was made in IW. It definitely relied on things falling into place, but Strange saw and knew what needed to happen. The Ancient One also knew this.